Thermostatic attemperating device.



M \i l fig A. KLEINFELDT. THERMOSTATIC ATTEMPERATING DEVICE.

APPLICATION HLED FEB. 15. I916.

lfiam m Patented. July 24, 1917.

2 SHEETS-SHEET1.

WITNESS I llVVE/VTOR 723 m I W 7 5 YAT 1mm A. KLEINFELDT.

THERMOSTATIC ATTEMPERATING DEVICE.

APPLICATION HLED FEB. 15,1916.

Patented July 24, 1917.

2 SHEETSSHEET 2- mawm .lllllli IN UTE %TATE% PATENT FFTU ARTHUR KLEINFELDT, 0F HOBOKEN, NEW JERSEY, ASSIGNOB, TO HENRY L. ERNY, OF HOBOKEN, NEW JERSEY.

THERMOSTATIC ATTEMPERATING DEVICE.

Application filed February 15, 1916.

To all whom it may concern:

Be it known that I, ARTHUR KLEINFELDT, a citizen of the United States, residing in the city of I-Ioboken, county of Hudson, in the State of New Jersey, have invented certain new and useful Improvements in Thermostatic Attemperating Devices, of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof.

This invention relates to apparatus for modifying the temperature of one fluid through the medium of another or attempering fluid without admixture of the two. Apparatus of this general character is commonly used in the manufacture of malt liquors, but it may also be used in other industries. The object of the invention is to produce an improved apparatus of this general character, and particularly an apparatus which shall be capable of raising or lowering rapidly the temperature of a large volume of a flowing liquid, shall eifect the regulation of the attempering fluid with great certainty and positiveness and shall be withal highly sensitive and capable of responding instantly to slight variations of temperature, shall be entirely automatic in its action so that when once adjusted to produce the desired results it shall continue to operate without attention, and shall be capable also of effecting automatically a change in temperature upon the fulfillment of some predetermined condition, such as the lapse of a predetermined period of time or the attainment of some predetermined temperature. The invention will be more fully explained hereinafter with reference to the accompanying drawings in which it is illustrated and in which,

Figure 1 is a view in vertical central section of an approved form of the apparatus.

Fig. 2 is a detail view showing, 011 a larger scale, a modified form of one of the attemperating pipes.

Fig. 8 is a detail view in section on the plane indicated by the broken line 3, 3 of Fig. 1.

Fig. 4; is a view of the apparatus in side elevation, on a scale slightly smaller than that of Fig. 1, with an automatic device for changing the temperature conditions substituted for the hand-controlled device Shown in Fig. 1.

Specification of Letters Patent.

Patented July 241, 1.917..

Serial No. 78,429.

Fig. 5 is a detail view in section, showing a feature of construction to be referred to.

The apparatus shown in the drawings comprising an external shell a, preferably cylindrical in form, and preferably made of a readily expansible metal, which has a rigid cap or cover plate a and a rigid bottom plate a suitably secured to the cylindrical shell. Suitably secured within the shell a, near its upper end, is an annular header Z). This may be supported by the end of the inlet pipe Z), which passes through the shell a and admits the fluid to be attempered, and by the end of an inlet pipe d, which also passes through the wall of the shell a and admits the attempering fluid, which may be steam. The inlet pipe 2') communicates directly with the interior of the header 5, but the inlet pipe (Z does not communicate therewith. Supported by the header 6, but not communicating therewith, is an annular vessel 0, the upper and lower ends of which are closed by annular end-plates c and 0 Small tubes 6 are secured in the upper and lower end-plates c and c and serve to conduct the water, wort or other fluid to be attempered from the header Z) to the lower portion of the drum a, from which it may pass upward, escaping from the apparatus through an outlet a Concentric with the annular vessel c is a second annular vessel f, the ends of which are closed by upper and lower plates 7 and F. The inlet pipe (Z for the steam or attempering fluid communicates 'directly with the interior of the outer, an-

nular vessel 0 and, through an extension d, with the interior of the inner, annular ves sel f. The outer, annular vessel 0 communicates at its lower end directly with the out let or return 9 for the steam or other attempering fluid and the inner, annular vessel f also communicates at its lower end, through the extension 5/, with the outlet 9. The inner, annular vessel 7 may be supported from the outer, annular vessel 0 by the extensions cl and g. The attempering fluid is thus permitted to circulate through the annular vessels 0 and f, which have a very large external area, and the fluid to be attempered is permitted to circulate first through the small tubes 6, which pass through the outer vessel 0, and then on all sides of both vessels 0 and f and is thereby brought quickly to or toward the temperature of the attempering fluid.

The rigid cap or cover, a of the main drum a supports, by a stirrup or bracket a a sensitive thermostatic device h, which preferably comprises a ring it and upper and lower flexible diaphragms h 72, which form between them a chamber for the reception of a fluid, such as alcohol or glycerin, adapted to respond quickly, in expansion or contraction, to the temperature of the fluid being attempered which surrounds the thermostatic device. For the purpose of increasing the volume of the sensitive fluid, and thereby increasing the relative movement of the diaphragms, as well as for the purpose of subjecting the sensitive fluid to the temperature of the fluid being attempered at different points, tubular water-legs h and h may be secured to the thermostatic device and depend therefrom, the water-leg it being secured to the ring 72,, which is suitably channeled to permit communication between the diaphragms and the water-legs, and the water-leg its being secured to the lower diaphragm. The lower diaphragm 7L3 rests upon the stirrup or bracket a and is immovable so that the en tire effect of the expansion or contraction of the sensitive fluid is exerted upon the upper diaphragm b which thus has a considerable relative movement. The waterleg 71 may be provided with a removable cap h for convenience in filling the thermostatic device before it is placed in position.

Directly mounted on the diaphragm 7L2 is a block A: which may be pressed open by a light spring to insure the return of the diaphragm k in the contracting movement of the thermostatic device. In the block 71: is pivoted a lever Z which is fulcrumed at 70 on a non-expansible rod 75*. The latter rests at its lower end on a movable arm or support 70" which rests in turn upon an adjusting screw 70'. ing upon the corresponding end of the lever 70 serves to hold the several parts last mentioned in firm contact.

On the other end of the lever 70 rests a pin Z which slides through a suitable stufling box in the cap a and serves as a means for transmitting the movement of the lever 70 under the influence of the thermostatic device, through a bell-crank lever Z, to the stem Z of a valve Z by which the admission of the steam or other attempering fluid is regulated.

If desired. the small tubes through which the fluid to be attempered first passes from the header 7), may have a double curvature, as shown at c in Fig. 2, for the purpose of increasing the length of travel and therefore the time of travel of the fluid to be attempered within the outer, annular vessel 0.

A light spring 70 bear- The apparatus may be adjusted for different conditions and for the production of different results by rotation of the adjusting screw is upon which the supporting arm it rests. As shown in Fig. 1, such adjustment may be effected by hand, the slotted screw a being en aged by a rotatable stem m, which is mounted in a suitable casing m? on the bottom plate a and has secured thereto a handle m for the convenience of the attendant. It may be desired, however, to provide means whereby a change in the temperature of the fluid which is being attempered may be eifected automatically upon the attainment of a given condition, such as the lapse of a predetermined period of time. For this purpose, as shown in Fig. 4.. the rotatable stem m which engages the adjusting screw k, shown in Fig. 1, may be acted upon by the spring m which tends to rotate the stem or spindle m so as to rotate the screw 70 and so change the position of the supporting arm 71: and the lever k in relation to the thermostatic device and vary the conditions of temperature under which the valve Z will be adjusted. detent is provided to hold the stem or spindle against the action of the spring until it is released. As shown, the spindle supports an electromagnet m which is suitably connected through the connections m and m with a suitable battery and a clock or other controlling device. Supported by a bracket m on the same arm with the magnet m is a. latch m which carries the armature m of a magnet and engages normally a stop m" on a ring m which is provided with a second stop m and is also adjustable so that the position of the latch, the magnet, the stem or spindle m and the adjusting screw 6 may be adjusted readily by hand to suit the conditions of operation. When ever the magnet is energized, through the closing of the circuit by the controlling device, the latch is released and the spindle m is rotated by the spring m to shift the adjusting screw 70.

The operation of the apparatus will be easily understood. The fluid to be attempered is admitted through the inlet 1), circulates through the tubes 6 and around the vessel 0 and the thermostatic device it, as described, and passes out through the'outlet a The steam or other attempering fluid is admitted through the inlet cl, circulates through the vessels 0 and f and returns through the outlet 5 to the boiler or other source of supply. The fluid to be attempered is quickly brought to the desired temperature through the absorption of heat from one fluid to the other through the walls of the tubes and vessels referred to and any variation in temperature is quickly compensated by the increase or decrease in the attempering fluid admitted through the action of the thermostatic device upon the controlling valve. lVhile the thermostatic device it is principally relied upon to control the admission of the attempering fluid, it will be observed that since the thermostatic device is supported rigidly by the head of the apparatus, the point of support of the lever system is carried by the bottom or opposite end of the apparatus, so that Whatever longitudinal expansion or contraction of the outer shell. (0 there may be, supplements the expansion or contraction of the thermostatic device and thus contributes to the certainty, quickness and sensitiveness of the thermostatic control.

It will be understood that various changes in details of construction and arrangement may be made to suit different conditions of use without departing from the spirit of the invention.

What I claim as my invention is:

1. An attempering apparatus for fluids comprising an. outer shell or drum, an inner, annular vessel with closed ends, a thermostatic device located co-aXially with the outer shell and the inner vessel, an annular header at one end of the inner vessel, tubes communicating with the header and extended through the ends of the inner vessel, connections to permit the admission of the fluid to be attempered to the header and to circulate through the tubes and the drum and around the inner vessel, connections to the inner, annular vessel to permit the admission and escape of the attempering fluid, a valve to control the admission of the attempering fluid, and means actuated by the thermostatic device to regulate the valve.

2. An attempering device for fluids comprising an outer shell or drum with a rigid cap, an inner vessel, a thermostatic device comprising a closed, liquid-containing vesselwith a flexible diaphragm, means to support the thermostatic device rigidly from said cap within the outer shell or drum, connections to the outer shell or drum to permit the admission and escape of the fluid to be attempered, connections to the inner vessel to permit the admission and escape of the attempering fluid, a valve to control the ad mission of the attempering fluid, and means actuated by the movement of the flexible diaphragm to regulate the valve.

3. An attempering device for fluids comprising an outer shell or drum with a rigid cap, an inner vessel, a thermostatic device comprising a closed, liquid-containing vessel with a flexible diaphragm, means to sup port the thermostatic device rigidly from said cap within the outer shell or drum, connections to the outer shell or drum to permit the admission and escape of the fluid to be attempered, connections to the inner vessel to permit the admission and escape of the attempering fluid, a valve to control the admission of the attempering fluid, a lever pivotally mounted on the flexible diaphragm and fulcrumed at one end, and intermediate devices actuated from the other end of the lever to regulate the valve.

4. An attempering device for fluids com prising an outer shell or drum with rigid ends, an inner vessel, connections to the outer shell or drum to permit the admission and escape of the fluid to be attempered, connections to the inner vessel to permit the admission and escape of the attempering fluid, a thermostatic device rigidly supported from one of said ends within the outer shell or drum, an actuating lever mounted on said thermostatic device, and a non-extensible supporting rod supporting the lever at one end and itself supported against the other end of the shell or drum.

5. An attempering device for fluids comprising an outer shell or drum with rigid ends, an inner vessel, connections to the outer shell or drum to permit the admission and escape of the fluid to be attempered, connections to the inner vessel to permit the admis sion and escape of the attempering fluid, a thermostatic device rigidly supported from one of said ends, an actuating lever mounted on said thermostatic device, a non-extensible supporting rod upon which the lever is fulcrumed at one end, and a supporting arm for said arm mounted on the other end of the shell or drum.

6. An attempering device for fluids comprising an outer shell or drum with rigid ends, an inner vessel, connections to the outer shell or drum to permit the admission and escape of the fluid to be attempered, connections to the inner vessel to permit the admission and escape of the attempering fluid, a thermostatic device rigidly supported from one of said ends, an actuating lever mounted on said thermostatic device, a non-extensible supporting rod upon which the lever is fulcrumed at one end, a supporting arm for the other end of said drum mounted on the other end of the shell or drum, and an adjusting screw carried by the said end of the shell or drum and bearing against the supporting arm.

7. An attempering apparatus for fluids comprising an outer shell or drum with a rigid cap and a rigid bottom, an inner veslOO sel, connections to the outer shell or drum to said rod, an adjusting screw mounted on the bottom to bear against said arm, a rotatable stem engaging said screw, and means to rotate said stem.

8. An atteinpering apparatus for fluids comprising an outer shell or drum with a rigid cap and a rigid bottom, an inner vessel, connections to the outer shell or drum to permit the admission and escape of the fluid to be attempered, connections to the inner vessel to permit the admission and escape of the attempering fluid, a thermostatic device supported by the cap of the outer shell or drum, a lever mounted on the thermostatic device, means actuated by the lever to control the admission of the attempering fluid, a non-extensible rod on which said lever is fulcrumed, a supporting arm mounted on the bottom oi. the shell or drum to support said rod, an adjusting screw mounted on the bottom to bear against said arm, a rotatable stem engaging said screw, a spring applied to said stem to rotate the stem, and a detent to prevent the action of the spring.

9. An attempering apparatus for fluids comprising an outer shell or drum with a rigid cap and a rigid bottom, an inner vessel, connections to the outer shell or drum to permit the admission and escape of the fluid to be attempered, connections to the inner vessel to permit the admission and escape of the attempering fluid, a thermostatic device supported by the cap of the outer shell or drum, a lever mounted on the thermostatic device, means actuated by the lever to control the admission of the attem pering fluid, a non-extensible rod on which said lever is fulcrumed, a supporting arm mounted on the bottom of the shell or drum to support said rod, an adjusting screw mounted on the bottom to bear against said arm, a rotatable stem engaging said screw, a spring applied to the stem to rotate the same, an arm secured to said stem, a detent carried by the arm to resist the action of the spring, and a magnet carried by the arm to release the detent.

This specification signed this llth day of February, A. D. 1916.

ARTHUR KLEINFELDT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

